R/LRC_rectangular.R
RectangularLRCFitter_computeGPPGradient.Rd
RectangularLRCFitter_computeGPPGradient
RectangularLRCFitter_computeGPPGradient(Rg, Amax, alpha)
ppfd -> photosynthetic flux density mumol / m2 / s or Global Radiation
saturation (beta parameter) adjusted for effect of VPD
slope at Rg = 0
numeric matrix (length(Rg), 2) of gradients of predicted GPP to Amax and alpha